公开(公告)号：US11732194B2

公开(公告)日：2023-08-22

申请号：US17028823

申请日：2020-09-22

Applicant: FUJIFILM Corporation

Inventor： Keisuke Kodama ,  Mitsuyoshi Ichihashi ,  Shunya Katoh ,  Takeshi Nakamori

IPC: G02B5/08 ,  C09K19/58 ,  B42D25/328 ,  G02B5/30 ,  C09K19/36 ,  G01N21/21 ,  C09K19/20

CPC classification number: C09K19/586 ,  B42D25/328 ,  G02B5/3016 ,  C09K19/36 ,  C09K2019/2078 ,  G01N21/21 ,  G01N2021/216 ,  G01N2201/0683 ,  G02B5/0841 ,  B42D25/328 ,  B42D25/30

Abstract: Provided are a cholesteric liquid crystal layer having an excellent reflection anisotropy, a low haze, and a high circular polarization degree of reflected light, and a method for producing the same. In addition, provided are a laminate, an optically anisotropic body, and a reflective film, each of which including the cholesteric liquid crystal layer. A cholesteric liquid crystal layer formed using a liquid crystal compound, in which, in at least one main plane out of a pair of main planes of the cholesteric liquid crystal layer, a direction of a molecular axis of the liquid crystal compound changes while continually rotating along at least one in-plane direction, the molecular axis of the liquid crystal compound is tilted with respect to the main plane of the cholesteric liquid crystal layer, and an arrangement direction of bright portions and dark portions derived from the cholesteric liquid crystalline phase, as observed under a scanning electron microscope in a cross section perpendicular to the main plane, is tilted with respect to the main plane of the cholesteric liquid crystal layer.

公开(公告)号：US10800333B2

公开(公告)日：2020-10-13

申请号：US15834942

申请日：2017-12-07

Applicant: FUJIFILM Corporation

Inventor： Akihiro Anzai ,  Kazuhiro Oki ,  Mitsuyoshi Ichihashi ,  Takao Taguchi

IPC: B60R1/04 ,  B60R1/12 ,  G02F1/1335 ,  G02B5/30 ,  G02F1/1333 ,  G02B5/08 ,  G09F9/00 ,  B60R1/08

Abstract: According to the invention, there are provided a vehicle minor with an image display function including: an image display device; and a half mirror, in which the half minor includes a reflection layer, and the reflection layer is inclined with respect to a surface of an image display portion of the image display device, and a method of manufacturing a vehicle mirror with an image display function including: positioning a half minor including a reflection layer on a surface of an image display portion of an image display device such that the half mirror is inclined with respect to the surface of the image display portion. In a vehicle minor with an image display function according to the invention, image visibility is hardly reduced by outside light.

公开(公告)号：US10794568B2

公开(公告)日：2020-10-06

申请号：US16272058

申请日：2019-02-11

Applicant: FUJIFILM Corporation

Inventor： Yoshihisa Usami ,  Mitsuyoshi Ichihashi ,  Kazuhiro Oki

IPC: F21V9/14 ,  A01G7/04 ,  G02B27/28 ,  A01G9/14

Abstract: Provided are a plant-growth laminated film and a plant-growth illumination apparatus that more efficiently provide circularly polarized light used for plant growth. Included are a reflective-type linearly polarizing plate that transmits one of linearly polarized light components of incident light and that reflects the other linearly polarized light component, and a λ/4 plate that converts, into circularly polarized light, linearly polarized light provided by transmission through the reflective-type linearly polarizing plate, wherein the λ/4 plate has an in-plane retardation of 165±40 nm at a wavelength of 660 nm.

公开(公告)号：US10746906B2

公开(公告)日：2020-08-18

申请号：US16034889

申请日：2018-07-13

Applicant: FUJIFILM Corporation

Inventor： Takao Taguchi ,  Kazuhiro Oki ,  Mitsuyoshi Ichihashi

IPC: G02B5/08 ,  G09F9/00 ,  G02B5/30 ,  G02B27/28 ,  G02F1/1335

Abstract: The half mirror includes a retardation layer, a circularly polarized light reflecting layer, and a front panel that are disposed in this order. The retardation layer has a front phase difference as measured at a wavelength of 500 nm of 107 to 127 nm and a front phase difference as measured at a wavelength of 475 nm of 110 to 130 nm. The circularly polarized light reflecting layer includes three cholesteric liquid crystal layers. The three cholesteric liquid crystal layers have different selective reflection center wavelengths λ1, λ2, and λ3. The center wavelengths λ1, λ2, and λ3 satisfy 380 nm

公开(公告)号：US10338288B2

公开(公告)日：2019-07-02

申请号：US15260938

申请日：2016-09-09

Applicant: FUJIFILM Corporation

Inventor： Mitsuyoshi Ichihashi

IPC: G02B1/11 ,  G02B5/30 ,  G03B21/604 ,  G02B27/01 ,  G03B21/28 ,  G03B21/56 ,  G03B21/16 ,  G02B5/26

Abstract: Due to the present invention, a reflection member including two or more layers of fixed cholesteric liquid crystal phases, in which the two or more layers of fixed cholesteric liquid crystal phases exhibit central wavelengths of mutually different selective reflection, and the two or more layers of fixed cholesteric liquid crystal phases include a layer formed of a composition including a disc-like liquid crystal compound and a layer formed of a composition including a rod-like liquid crystal compound and a projected image display member and a heat shield member which include the reflection member are provided. The reflection member of the present invention has favorable selective reflection characteristics with respect to oblique incidence rays.

公开(公告)号：US10139533B2

公开(公告)日：2018-11-27

申请号：US15014640

申请日：2016-02-03

Applicant: FUJIFILM Corporation

Inventor： Mitsuyoshi Ichihashi ,  Wataru Majima ,  Kazuhiro Oki

IPC: G01J4/04 ,  G02B5/30 ,  G02B27/28 ,  G01J4/00

Abstract: According to the invention, there is provided a circular polarizing filter for selectively transmitting circularly polarized light of any one sense of either right-handed circularly polarized light or left-handed circularly polarized light at a specific wavelength in which scattering transmittance/vertical transmittance when circularly polarized light of the sense of the specific wavelength enters from any one surface is less than scattering reflectance/regular reflectance when circularly polarized light of the other sense enters from the surface. The circular polarizing filter includes a circularly-polarized light separating layer, the circularly-polarized light separating layer includes a reflected light-scattering circularly-polarized light separating layer, and may further include a reflected light-non-scattering circularly-polarized light separating layer, the reflected light-scattering circularly-polarized light separating layer is composed of a layer having a cholesteric liquid crystalline phase fixed therein, and the reflected light-non-scattering circularly-polarized light separating layer is composed of a layer having a cholesteric liquid crystalline phase fixed therein, or a laminate including a linearly-polarized light separating layer and a λ/4 phase difference layer. The circular polarizing filter of the invention has a high circular polarizance, and a high-sensitivity sensor system can be provided using the circular polarizing filter of the invention.

公开(公告)号：US10126474B2

公开(公告)日：2018-11-13

申请号：US15609890

申请日：2017-05-31

Applicant: FUJIFILM Corporation

Inventor： Akihiro Anzai ,  Kazuhiro Oki ,  Mitsuyoshi Ichihashi ,  Takao Taguchi

IPC: G02B5/30 ,  A47G1/04 ,  G02F1/1335 ,  B60R1/08 ,  A47G1/00 ,  G02B5/26 ,  A47G1/12 ,  G02F1/1333

Abstract: According to the invention, there is provided a mirror with an image display function including, in this order: an image display device; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a cholesteric liquid crystal layer, the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region, and the central wavelength is different from an emission peak wavelength of the image display device by 5 nm or greater. The mirror with an image display function of the invention is capable of displaying a bright image.

公开(公告)号：US09910197B2

公开(公告)日：2018-03-06

申请号：US14742035

申请日：2015-06-17

Applicant: FUJIFILM CORPORATION

Inventor： Kazuhiro Oki ,  Mitsuyoshi Ichihashi ,  Wataru Majima

IPC: G02F1/1335 ,  G02B5/26 ,  G02B5/20

CPC classification number: G02B5/26 ,  G02B5/208

Abstract: The present invention provides an optical member including a reflection layer and an information presentation layer, the reflection layer comprising one or more circularly-polarized light reflection layers selected from the group consisting of a right circularly-polarized light reflection layer and a left circularly-polarized light reflection layer, the circularly-polarized light reflection layer consisting of a layer obtained by fixing a cholesteric liquid-crystalline phase, the reflection layer having a reflection wavelength at which a specular reflectance for non-polarized light is more than 20% in a wavelength region in which the circularly-polarized light reflection layer exhibits selective reflection, a diffuse reflectance for non-polarized light at the reflection wavelength less than 50%, the reflection wavelength being in an infrared wavelength region, and the information presentation layer having a pattern of a material that absorbs or reflects light of the reflection wavelength. The optical member can be used as a handwriting input sheet, which can be used by being stuck to the surface of a display.

公开(公告)号：US09848540B2

公开(公告)日：2017-12-26

申请号：US14058992

申请日：2013-10-21

Applicant: FUJIFILM Corporation

Inventor： Yoshihisa Usami ,  Mitsuyoshi Ichihashi ,  Yohsuke Takeuchi

IPC: A01G7/04 ,  F21V9/14

CPC classification number: A01G7/045 ,  F21V9/14 ,  Y02P60/146

Abstract: The present invention provides a circular polarization illumination device which can irradiate right-circularly polarized light at a large light amount from a light source of right-circularly polarized light with a high efficiency and can irradiate left-circularly polarized light at a large light amount from a light source of left-circularly polarized light with a high efficiency, and a plant growth regulation method that can efficiently regulate the promotion or inhibition of the growth of plants by using the circular polarization illumination device. Moreover, the illumination device includes a light-emitting light source, a reflective polarizing plate, reirradiation unit, and circular polarization conversion unit.

公开(公告)号：US11732191B2

公开(公告)日：2023-08-22

申请号：US17486096

申请日：2021-09-27

Applicant: FUJIFILM Corporation

Inventor： Yuki Fukushima ,  Hiroshi Inada ,  Toshikazu Sumi ,  Shunya Katoh ,  Mitsuyoshi Ichihashi

IPC: G02F1/1333 ,  C09K19/30 ,  C09K19/34 ,  G02B5/30 ,  C09K19/04

CPC classification number: C09K19/3068 ,  C09K19/3497 ,  G02B5/3016 ,  C09K2019/0448 ,  C09K2019/3075 ,  C09K2219/03

Abstract: Provided is a compound which is capable of reducing a tilt angle of a liquid crystal molecule, and a polymerizable composition, a cured product, an optical film, a polarizing plate, and an image display device, each using the compound. The compound is represented, for example, by Formula (I), P-Sp-Z-G1-(X1-Cy1)n-(X2-A1)m-X3-A2.